This inner ring is a separate component designed to complete a needle roller bearing assembly with a cylindrical inner raceway. It is manufactured with a bore diameter of 110.0 mm, a width of 40.0 mm, and a net mass of 849.0 g, corresponding to the IR110X125X40-XL designation. As a cylindrical inner ring, it provides the running surface for the rolling elements and allows the bearing arrangement to be assembled with the correct radial fit on the shaft. Being supplied as an individual part, it must be paired with the matching outer ring and roller/cage assembly to form a complete bearing, giving flexibility in mounting and replacement of worn components without exchanging the full bearing set.